Sayo Maki , 1 , 4 , Yoshiyuki Itoh 1 , Seiji Kubota 1 , Tohru Okada 1 , Rie Nakahara 1 , Junji Ito 1 , Mariko Kawamura 1 , Shinji Naganawa 1 , Yasushi Yoshino 2 , Takashi Fujita 2 , Masashi Kato 2 , Momokazu Gotoh 2 , Mitsuru Ikeda 3
12 September 2017
The aim of this study was to determine the outcomes and adverse events for 300 men with prostate cancer treated with 125iodine ( 125I) brachytherapy with and without external-beam radiation therapy (EBRT) at a single institution in Japan. Between February 2005 and November 2011, 300 consecutive patients with clinically localized prostate cancer were treated with 125I brachytherapy at the Nagoya University Hospital. A total of 271 men were treated with implants with doses of 145 Gy, and 29 men were treated with implants with doses of 110 Gy combined with EBRT (40–50 Gy/20–25 fractions). The median patient age was 69 years (range, 53–83 years). The median follow-up period was 53 months (range, 5–99 months). According to the National Comprehensive Cancer Network risk classification, 132 men (44%) had low-risk, 147 men (29%) had intermediate-risk and 21 men (7%) had high-risk disease. The 5-year overall survival rate, biochemical relapse–free survival rate, and disease-specific survival rates were 93.5%, 97.3% and 98.5%, respectively. Two men (0.6%) died of prostate cancer and 10 men (3.3%) died of other causes. Seventeen men (5.6%) experienced Grade 2 rectal bleeding in all: 12 (41.4%) of 29 in brachytherapy with EBRT, and 5 (1.8%) of 271 in brachytherapy alone. The rates of Grade 2 and 3 genitourinary toxicity were 1.0% and 1.7%, respectively. Excellent local control was achieved at our hospital for localized prostate cancer with 125I brachytherapy with and without EBRT. Gastrointestinal and genitourinary toxicities were acceptable.